SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A car traveled 60 km in 2 hours, 84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination. What was the car’s average speed?
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212 km/hr
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42 km/hr
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148 km/hr
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1060 km/hr
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Explanation:
Detailed explanation-1: -The car’s average speed to the nearest whole number is 42 km/hr.
Detailed explanation-2: -Step-by-step explanation: Since we need to know the units in unitary form, we can first do 60/2 = 30 km/h. So now we have, 60:80. Lower it to the lowest form. So we can do 6:8 first (both divided by 10), then lower it down to 3:4 (divided by 2).
Detailed explanation-3: -If its speed is 60 km per hour then the car will go 135 km in two and a quarter hours.
There is 1 question to complete.